Lock



2 Sheets-Sheet l Get. 22, 1935. H. F. scHMmT LOCK Filed Dec. 1l; 1934 5 J gg@ Q0 57705 ,Qa

3 eff ATTORNEYS Oct. 22, 1935. H. F, SCHMlD-r ZSQ LOCK Filed DSC. 1l, 1954 2 Sheets-Sheet 2 INVENTOR Patented Oct. 22, 1935 UNITED STATES FATENT @FFIQE 2 Claims.

The invention relates to a lock and more especially to a door or window lock.

'Ihe primary object of the invention is the provision of a lock of this character, wherein the construction thereof is such as to permit its use on sliding or swinging windows or doors, so that these may be locked to avoid outside intrusion, it being practically impossible to release the lock from the outside of an enclosure and such lock will maintain the door or window firm to avoid any rat-tling action thereof.

Another object of the invention is the provision of a lock of this character which is simple in construction, thoroughly reliable and eflicient in its purpose, strong, durable, and inexpensive to manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described in detail, illustrated in the accompanying drawings, which disclose the preferred embodiment of the invention, and pointed out in the claims hereunto appended.

In the accompanying drawings:

Figure 1 is a fragmentary vertical sectional View through the upper and lower sashes of a window, showing the lock constructed in accordance with the invention applied thereto, the lock being shown by full lines in locking position and by dotted lines in releasing position.

Figure 2 is a fragmentary horizontal sectional View showing the lock in plan.

Figure is a horizontal sectional View through the lock.

Figure 4 is a vertical transverse sectional view through the lock.

Figure 5 is another vertical transverse sectional View through the lock.

Figure 6 is a vertical longitudinal sectional view through the lock.

Figure 7 is a plan view of the keeper base.

Figure 8 is a plan View of the base of the lock casing.

Figure 9 is a plan view of the blank from which the casing is made.

Figure 10 is a horizontal sectional view showing a slight modication of lock.

Figure 11 is a sectional view on the line I I-I I of Figure 10.

Figure 12 is an elevation of the keeper of the modified form.

Figure 13 is a view similar to Figure 10, showing a slight further modification.

Figure 14 is a sectional View on the line I4-I4 of Figure 13, looking in the direction of the arrows.

Figure 15 is a perspective View of the keeper, the same being inverted.

Similar reference characters indicate corre- 5 spending parts throughout the several views in the drawings.

Referring to the ,drawings in detail, particularly Figures 1 to 9 which disclose the preferred embodirnent of the invention, A designates a part lo of an upper sash and B a part of the lower sash of a window, these being of standard make-up, and upon the top meeting rail of the lower sash is the base plate I of the lock casing II, the latter being cut from a single blank to provide 15 a top, sides and ends, the sides and ends being formed with the lugs I2 which fit in suitable openings i3 in the base plate I9 and being riveted or otherwise secure so that the base plate I9 and the casing become a unit. Fitted within the casing l I is a slide block Ill through which is passed a plunger I5, the same being secured to the block lby a tie pin I6 and this plunger works through suitable openings l'I in the ends of the casing II. At the outer end of the plunger I 5 is a hand knob 25 o-r head I8, while the inner end I 9 of the said plunger constitutes an auxiliary lock operating in a manner presently described.

The base plate I9 is made secure to the top cross rail of the sash B by fasteners 2E). The block 30 I4 has swingingly tted therein the ends of a main locking loop or yoke 2l, the sides of the casing II being cut away as at 22 to provide a clearance for the said loop or yoke 2| Carried by the bottom meeting rail of the upper sash A is the keeper 23, this being joined with the base 24 suitably secured to the sash, and releasably engageable with the keeper 23 is the loop or yoke 2 I. The keeper 23 is provided with the socket 25 for the end I9 of the plunger I5, as will 40 be apparent in Figure 3 of the drawings and thus it can be seen that a double lock is had with the keeper 23. Surrounding the plunger i 5 and tensioning the block le is a coiled expansion spring 26 which when compressed permits the disen- 45 gagement of the loop or yoke 2l from the keeper 23 and also the release ofthe end I9 from the said keeper 23. Normally the spring 26, under the tension thereof against the block I 4 when the yoke or loop ZI is engaged with the keeper 23, holds the said yoke or loop under tension so as to prevent rattling of the sashes A and B within the window frame. It should be apparent that any unevenness in the meeting relation of the meeting rails of the sashes A and B will not in any manner disturb the locking of the sashes in the use of the lock as hereinbefore described. It is practically impossible to release the lock from without an enclosure and such lock can be released from within the enclosure with ease and dispatch.

In Figures 10 and 1l of the drawings there is shown a slight modification of lock, wherein the casingY 21 has mounted therein a guide 28, over which is telesooped the tubiform plunger 29 having the handV knob or head 3i), this plunger Y29 being threaded into the slide block 3! mounted Within said casing 2l, while surrounding the guide 28 is the tensioning spring 32, this operating upon the slide block 3| alike to the spring 26.

The slide block v3l carries the swinging yoke or VVloop 33 engageable with the keeper 35i, the latter being upon a door frame 35 While the casing 21 is upon a swinging or sliding door 3S.

In Figures 13 and 14 of the drawings thereV is shown aY still further modification of the invention, wherein the lock casing 3'! has the sliding block 38 therein and threaded into this block is the plunger stem 39 carrying the hand knob or Y bottom, perforated ends, and slotted sides, a block?,

slidable in the casing, a keeper, a loop-like baily for engaging the keeper and having ends passed through the slotted sides and swingingly seated in the block, a spring within the `casing and active upon the block for urging the bail in'locking engagement with said keeper and a push plungerV engaged in the block and guided through one perforated end of the casing for external gripping thereof.

2. The combination of a casing having a top, bottom, perforated ends, and slotted sides,Y a block slidable in the casing, a keeper, a loop-like bail for engaging the keeper and having ends passed through the slotted sides and swingingly seated in the block, a spring Within the casing and active upon the block for urging the bail in looking engagement with said keeper, a push plunger engaged in the block and guided through one perforated end of the casing for external gripping thereof and a guide for said plunger and having a fastener engaged in the other perforated end of the casing.

' HERMAN F. SCHMIDT. 

